28153039665 has 8 divisors (see below), whose sum is σ = 45044863488. Its totient is φ = 15014954480.

The previous prime is 28153039661. The next prime is 28153039723. The reversal of 28153039665 is 56693035182.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28153039665 - 2² = 28153039661 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28153039661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 938434641 + ... + 938434670.

It is an arithmetic number, because the mean of its divisors is an integer number (5630607936).

Almost surely, 2^28153039665 is an apocalyptic number.

It is an amenable number.

28153039665 is a deficient number, since it is larger than the sum of its proper divisors (16891823823).

28153039665 is a wasteful number, since it uses less digits than its factorization.

28153039665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1876869319.

The product of its (nonzero) digits is 1166400, while the sum is 48.

The spelling of 28153039665 in words is "twenty-eight billion, one hundred fifty-three million, thirty-nine thousand, six hundred sixty-five".